Buggy code:
public class PatternTrans extends DepthFirstAnalysisAdaptor { private TransAssistantCG transAssistant ; private PatternVarPrefixes config ; private IterationVarPrefixes iteVarPrefixes ; private String casesExpNamePrefix ; public PatternTrans ( IterationVarPrefixes iteVarPrefixes , TransAssistantCG transAssistant , PatternVarPrefixes config , String casesExpNamePrefix ) { } @ Override public void caseALocalPatternAssignmentStmCG ( ALocalPatternAssignmentStmCG node ) throws AnalysisException { } @ Override public void caseACasesStmCG ( ACasesStmCG node ) throws AnalysisException { } @ Override public void caseAMethodDeclCG ( AMethodDeclCG node ) throws AnalysisException { } @ Override public void caseABlockStmCG ( ABlockStmCG node ) throws AnalysisException { boolean taggedBlock = false ; for ( int i = 0 ; i < ( node . getLocalDefs ( ) . size ( ) ) ; i ++ ) { AVarDeclCG dec = node . getLocalDefs ( ) . get ( i ) ; if ( ( dec . getTag ( ) ) != null ) { taggedBlock = true ; DeclarationTag tag = fetchTag ( dec ) ; if ( ( tag . isDeclared ( ) ) || ( ! ( dec instanceof AVarDeclCG ) ) ) { continue ; } AVarDeclCG nextElementDecl = ( ( AVarDeclCG ) ( dec ) ) ; SPatternCG pattern = nextElementDecl . getPattern ( ) ; if ( pattern instanceof AIdentifierPatternCG ) { <START_BUG> return ; <END_BUG> } ABlockStmCG patternHandlingBlock = consPatternHandlingInIterationBlock ( nextElementDecl , tag , nextElementDecl . getExp ( ) ) ; List < SStmCG > stms = new LinkedList < SStmCG > ( ) ; stms . addAll ( patternHandlingBlock . getStatements ( ) ) ; stms . addAll ( node . getStatements ( ) ) ; node . setStatements ( stms ) ; dec . apply ( this ) ; } } if ( ! taggedBlock ) { List < PatternInfo > patternInfo = extractFromLocalDefs ( node . getLocalDefs ( ) ) ; if ( ! ( patternInfo . isEmpty ( ) ) ) { List < DeclBlockPair > declBlockPairs = consPatternHandlingBlocksSeparate ( node . getLocalDefs ( ) , patternInfo ) ; for ( int i = 0 ; i < ( declBlockPairs . size ( ) ) ; i ++ ) { DeclBlockPair currentDeclBlockPair = declBlockPairs . get ( i ) ; if ( ( currentDeclBlockPair . getNextDecl ( ) ) != null ) { SStmCG stm = transAssistant . getEnclosingStm ( currentDeclBlockPair . getNextDecl ( ) , "block<seq2seq4repair_space>statement<seq2seq4repair_space>pattern<seq2seq4repair_space>handling" ) ; ABlockStmCG block = new ABlockStmCG ( ) ; transAssistant . replaceNodeWith ( stm , block ) ; block . getStatements ( ) . add ( currentDeclBlockPair . getBlock ( ) ) ; block . getStatements ( ) . add ( stm ) ; } else { INode parent = currentDeclBlockPair . getDecl ( ) . parent ( ) ; if ( parent instanceof ABlockStmCG ) { ABlockStmCG enc = ( ( ABlockStmCG ) ( parent ) ) ; enc . getStatements ( ) . addFirst ( currentDeclBlockPair . getBlock ( ) ) ; } else { Logger . getLog ( ) . printErrorln ( ( ( ( "Expected<seq2seq4repair_space>parent<seq2seq4repair_space>of<seq2seq4repair_space>current<seq2seq4repair_space>declaration<seq2seq4repair_space>" + "to<seq2seq4repair_space>be<seq2seq4repair_space>a<seq2seq4repair_space>block<seq2seq4repair_space>statement<seq2seq4repair_space>but<seq2seq4repair_space>got:<seq2seq4repair_space>" ) + parent ) + ".<seq2seq4repair_space>Pattern<seq2seq4repair_space>handling<seq2seq4repair_space>block<seq2seq4repair_space>could<seq2seq4repair_space>not<seq2seq4repair_space>be<seq2seq4repair_space>added." ) ) ; } } } } } for ( SStmCG stm : node . getStatements ( ) ) { stm . apply ( this ) ; } } @ Override public void caseAForAllStmCG ( AForAllStmCG node ) throws AnalysisException { } private ABlockStmCG consPatternHandlingInIterationBlock ( AVarDeclCG nextElementDecl , DeclarationTag tag , SExpCG assignedExp ) { } private List < ABlockStmCG > consPatternHandlingBlockCases ( List < PatternInfo > patternInfo , PatternBlockData patternData ) { } private ABlockStmCG consIdVarDeclaration ( PatternInfo currentInfo , SPatternCG currentPattern ) { } private ABlockStmCG consPatternHandlingBlock ( List < PatternInfo > patternInfo ) { } private List < DeclBlockPair > consPatternHandlingBlocksSeparate ( List < AVarDeclCG > decls , List < PatternInfo > patternInfo ) { } private boolean basicCaseHandled ( SPatternCG currentPattern ) { } private ABlockStmCG consPatternCheck ( SPatternCG pattern , STypeCG type , SExpCG actualValue , ABlockStmCG declBlock ) { } private ABlockStmCG consPatternCheck ( boolean declarePatternVar , SPatternCG pattern , STypeCG type , PatternBlockData patternData , SExpCG actualValue ) { } private ABlockStmCG consUnionTypedTuplePatternCheck ( boolean declarePatternVar , AUnionTypeCG unionType , PatternBlockData patternData , SExpCG actualValue , ATuplePatternCG tuplePattern ) { } private ABlockStmCG consRecordPatternCheck ( boolean declarePattern , ARecordPatternCG recordPattern , ARecordTypeCG recordType , PatternBlockData patternData , SExpCG actualValue , boolean checkRecordType ) { } @ SuppressWarnings ( "unchecked" ) private ABlockStmCG consTuplePatternCheck ( boolean declarePatternVar , ATuplePatternCG tuplePattern , ATupleTypeCG tupleType , PatternBlockData patternData , SExpCG actualValue , boolean cast ) { } private void consSuccessVarCheck ( SPatternCG pattern , PatternBlockData patternData ) { } private void mismatchHandling ( SPatternCG pattern , PatternBlockData patternData ) { } private AIfStmCG consMismatchCheck ( AIdentifierVarExpCG successVar , SStmCG noMatchStm ) { } private void initSuccessVar ( PatternBlockData patternData , SExpCG initExp , ABlockStmCG patternBlock ) { } private ABlockStmCG initPattern ( boolean declare , SPatternCG pattern , STypeCG type , SExpCG actualValue , AIdentifierPatternCG idPattern ) { } private ABlockStmCG consFieldCheckBlock ( PatternBlockData patternData , AIdentifierVarExpCG patternVar , List < SPatternCG > patterns , List < STypeCG > types , boolean cast ) { } private boolean skipPattern ( SPatternCG pattern ) { } private boolean morePatternsToGenerate ( List < SPatternCG > patterns , int currentPatternIndex ) { } private ABlockStmCG consPatternBlock ( PatternBlockData patternData , SPatternCG currentPattern , STypeCG currentType , SExpCG actualValue , boolean cast ) { } private SExpCG consFieldValueToMatch ( AIdentifierVarExpCG patternVar , int fieldNumber , STypeCG currentType , boolean cast ) { } private AAssignToExpStmCG declareAndAssignIdVarAssignment ( ABlockStmCG declBlock , SPatternCG currentPattern , STypeCG currentType , SExpCG valueToMatch ) { } private < T > ABlockStmCG consSimplePatternCheck ( boolean declarePatternVar , SPatternCG pattern , SExpCG valueToMatch , PatternBlockData patternData , SExpCG actualValue ) { } public List < PatternInfo > extractFromLocalDefs ( List < AVarDeclCG > localDefs ) { } private PatternInfo extractPatternInfo ( AVarDeclCG decl ) { } public List < PatternInfo > extractFromParams ( List < AFormalParamLocalParamCG > params ) { }

Fix:
continue ;